SB040AR0
5/16" Stainless Steel Constant Section Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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SB040AR0 Bearing Product Overview & Core Advantages
The SB040AR0 is a thin-section angular contact ball bearing engineered for applications demanding high precision and compact design. As part of the Reali-Slim Stainless Steel Bearings series, it features a single-row construction optimized to handle significant combined loads, particularly thrust loads in one direction, thanks to its defined 30° contact angle. Its corrosion-resistant stainless steel construction and ABEC-1 precision make it ideal for high-reliability, space-constrained systems.
SB040AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SB | Reali-Slim Stainless Steel Bearing Series |
| 040 | Bore Diameter: 4 inches |
| A | 30° Contact Angle |
| R | Flanged Outer Ring |
| 0 | Open (Unsealed) Construction |
SB040AR0 Bearing Structural Features & Performance Benefits
Thin-Section Design: With a consistent cross-section (4" bore, 4.625" OD, 0.3125" width), this bearing enables compact and lightweight machinery designs while maintaining structural integrity.
Angular Contact Performance: The 30° contact angle and single-row construction provide excellent axial load capacity in one direction (2100 lbf static) while maintaining substantial radial load capacity (2040 lbf static).
Precision Engineering: Manufactured to ABEC-1 tolerance standards with tight dimensional controls (bore tolerance: -0.0008" to 0"), ensuring smooth operation and high rotational accuracy.
Corrosion Resistance: Constructed entirely from stainless steel (rings and balls) with brass cage, offering superior corrosion resistance and suitability for harsh environments within the operating temperature range of -30°C to 110°C.
SB040AR0 Bearing Typical Application Areas
- Robotics and Automation: Robotic arms, rotary joints, and precision positioning systems
- Aerospace and Defense: Guidance systems, radar platforms, and aircraft instrumentation
- Medical Equipment: CT scanners, surgical robots, and diagnostic imaging devices
- Semiconductor Manufacturing: Wafer handling equipment and precision stages
- Optical and Instrumentation: Telescope mounts, measuring instruments, and surveillance systems
